Can an artificial intelligence suffer?
AFAIK, pain is produced by the nervous system (after the realease of chemicals), so no AI suffers. AI does not (yet) possess a life (and I don't think this will ever happen).

A definition of life from the dictionary:


  the condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death.


The current AI definitely does not possess a life according to this definition. AI is inorganic (like a rock): it is based on silicon (not carbon atoms).